Kathy Keller Books

The Meaning of Marriage Video Study: A Vision for Married and Single People

By Timothy J. Keller, Kathy Keller

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God's Wisdom for Navigating Life

By Timothy J. Keller, Timothy Keller With Kathy Keller

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From pastor and New York Times bestselling author Timothy Keller comes a beautifully packaged, yearlong daily devotional based on the Book of Proverbs.Proverbs is God’s book of wisdom, teachi...

Turramulli the giant quinkin

By P. J. Trezise, Percy Trezise, Dick Roughsey

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Two children of the Yalanji people are pursued by Turramulli, the largest and fiercest of the spirits roaming the bushland.

Los Cantos de Jesus

By Timothy J. Keller, Poiema Publicaciones, Kathy Keller

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Ehe

By Timothy J. Keller, Kathy Keller

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How to Convert ISBN-10 to ISBN-13 (and Vice Versa): A Complete Guide

If you’re in the world of books—whether as a publisher, librarian, bookseller, or avid collector—you’ve likely come across the terms ISBN-10 and ISBN-13. Understanding these formats and knowing how to convert between them is essential for maintaining consistency and compatibility in book records. In this post, we’ll cover everything you need to know about ISBN conversions, step by step.

What is an EAN and How Does it Relate to an ISBN?

If you’ve ever purchased a product online or in a store, you’ve likely come across a barcode. Behind these barcodes lies a standardized system that makes modern commerce possible. Two key codes often encountered are the EAN (European Article Number) and ISBN (International Standard Book Number). But what are they, how are they connected, and why are they so crucial? Let’s explore.